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发明名称
Scharfzeichnende Roentgenfolie oder -schirm
摘要
申请公布号
DE755315(C)
申请公布日期
1952.05.19
申请号
DE1933C048500D
申请日期
1933.11.14
申请人
CHEMISCHE FABRIK VON HEYDEN A. G.
发明人
分类号
G21K4/00
主分类号
G21K4/00
代理机构
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